Provided are a dosage management system and an apparatus and method for supporting a medicine-taking service. The dosage management system includes a dosage management server managing information required for a dosage schedule and support of a medicine-taking service, and transmitting a corresponding dosage schedule on demand of the dosage schedule; and an apparatus for supporting a medicine-taking service, wherein the apparatus for supporting a medicine-taking service deposits packets of medicines packaged in a series of medicine packets, receives a corresponding dosage schedule, displays medicine-tacking alarm according the received corresponding dosage schedule, sequentially discharges one of the deposited packets of medicines, checks whether a user takes a packet of medicines to transmit the result of taking medicine to the dosage management server.